Inherits: If T is a (possibly cv-qualified)
type with a trivial copy-constructor then inherits from true_type,
otherwise inherits from false_type.

These two traits are synonyms for each other.

If a type has a trivial copy-constructor then the constructor has the same
effect as copying the bits of one object to the other: calls to the constructor
can be safely replaced with a call to memcpy.

Compiler Compatibility: If the compiler
does not support partial-specialization of class templates, then this template
can not be used with function types.

Without some (as yet unspecified) help from the compiler, has_trivial_copy
will never report that a user-defined class or struct has a trivial constructor;
this is always safe, if possibly sub-optimal. Currently (May 2011) compilers
more recent than Visual C++ 8, GCC-4.3, Greenhills 6.0, Intel-11.0, and Codegear
have the necessary compiler intrinsics
to ensure that this trait "just works". You may also test to see
if the necessary intrinsics
are available by checking to see if the macro BOOST_HAS_TRIVIAL_COPY
is defined.

C++ Standard Reference: 12.8p6.

Header:#include<boost/type_traits/has_trivial_copy.hpp>
or #include<boost/type_traits.hpp>